The Mavic Cyclone Thermo Jacket is built as an acknowledgement of just how much you put a winter riding jacket through. As you probably know, riding in the coldest months requires weather protection -- that much is obvious. But that protection isn't any good if your jacket doesn't breathe. After all, being wet means you'll be cold, whether that dampness results from rain or sweat. And you'll want a close-to-skin fit to keep it from flapping in the cool breeze. The Cyclone checks off all those boxes, and does so in the classic styling you've come to expect from Mavic. The secret to the Cyclone's supreme comfort is in its thoughtful application of technical fabrics. When you're on the bike, your shoulders and chest represent the leading edge, and accordingly, those are the areas that require the greatest protection from wind and rain. That's why the chest, shoulders, and arms were built from Mavic's Tech Dry ST fabric, which is both waterproof and windproof. While it's an incredible material from a protection standpoint, Mavic opted to use something lighter and more breathable under the arms and at the back, namely its Ride Wick Warm fabric. Like the name implies, this is the winter-weight version of Ride Wick, which is renowned for its ability to transport moisture away from the skin, and to the surface of the jacket where it can evaporate, rather than wetting your jacket out. This combination of materials yields the ideal blend of protection and comfort that you need from a great winter riding jacket. The Cyclone jacket is noteworthy for more than just its use of fabrics. It's built on Mavic's Pro fit, which ensures that it stays right next to your body, avoiding flapping, or any openings that could turn into air scoops when you get rolling. Naturally, Pro fit is tailored to the body types of fit cyclists, which is another way of saying that it's decidedly slim. For reference, Pro fit features a 4cm smaller chest than Mavic's standard fit, so if you're typicall...